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Short Communication | Open Access

Assessment of wear micromechanisms on a laser textured cemented carbide tool during abrasive-like machining by FIB/FESEM

Shiqi FANG1,2( ), Dirk BÄHRE1, Luis LLANES2
Institute of Production Engineering, Saarland University, Saarbrücken 66123, Germany
CIEFMA-Department of Materials Science and Engineering, EEBE-Campus Diagonal Besòs, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
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Abstract

The combined use of focused ion beam (FIB) milling and field-emission scanning electron microscopy inspection (FESEM) is a unique and successful approach for assessment of near-surface phenomena at specific and selected locations. In this study, a FIB/FESEM dual-beam platform was implemented to docment and analyze the wear micromechanisms on a laser-surface textured (LST) hardmetal (HM) tool. In particular, changes in surface and microstructural integrity of the laser-sculptured pyramids (effective cutting microfeatures) were characterized after testing the LST-HM tool against a steel workpiece in a workbench designed to simulate an external honing process. It was demonstrated that: (1) laser-surface texturing does not degrade the intrinsic surface integrity and tool effectiveness of HM pyramids; and (2) there exists a correlation between the wear and loading of shaped pyramids at the local level. Hence, the enhanced performance of the laser-textured tool should consider the pyramid geometry aspects rather than the microstructure assemblage of the HM grade used, at least for attempted abrasive applications.

Keywords

wearlaser surface texturingfocused ion beam (FIB)field-emission scanning electron microscopy inspection (FESEM)cemented carbidesabrasive machining processes

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Friction
Volume 9 Issue 3,
June 2021
Pages 656-664
DOI: 10.1007/s40544-020-0422-z
Cite this article:
FANG S, BÄHRE D, LLANES L. Assessment of wear micromechanisms on a laser textured cemented carbide tool during abrasive-like machining by FIB/FESEM. Friction, 2021, 9(3): 656-664. https://doi.org/10.1007/s40544-020-0422-z

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Received: 29 November 2019
Revised: 20 March 2020
Accepted: 07 May 2020
Published: 02 November 2020
© The author(s) 2020

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